[compiz] KDesktop 3 transparency patch

[Robert Carr]

For those who don't already know, similar patches for libeel and
nautilus are available at:
http://bugzilla.gnome.org/show_bug.cgi?id=444320
and a wallpaper plugin that supports the hint and images/flat
fills/gradients is available at http://gitweb.opencompositing.org. I
plan to add compositing of elements/scaling in the near future.

Regards,
Robert

On 6/6/07, Dennis Kasprzyk <onestone at opencompositing.org> wrote:
> Hello,
>
> this patch adds support for real transparency to kdesktop. It adds two new
> composite manager related features. To activate the features kdesktop has to
> be started with the "--bg-transparency" option.
>
> The first one allows you to change the opacity of the background image. This
> works currently with the beryl transparent cube and will also work with
> compiz once the transparent cube gets applied. To activate the feature add
> the following to your kdesktoprc:
> [Background Common]
> BackgroundOpacity=90 (0 = fully transparent / 100 = opaque)
>
> The second feature allows compiz (and later maybe other composite managers) to
> tell kdesktop not to paint the background image
> ("_COMPIZ_WALLPAPER_SUPPORTED" x atom). In this case compiz is able to paint
> a viewport dependent background or to make it even animated. This feature
> looks for changes to the x atom, so that kdesktop will automatically switch
> back to normal background if kwin gets started or compiz stops to render the
> wallpaper.
>
> This patch is against the current kde3 svn.
>
> You can also find it with screenshots on
> http://www.kde-apps.org/content/show.php/KDesktop+transparency+support?content=59864
>
> Regards
> Dennis
>
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